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Tomcat example source code file (AjpConstants.java)

This example Tomcat source code file (AjpConstants.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

jk_ajp13_get_body_chunk, move, put, sc_a_are_done, sc_a_context, sc_req_authorization, sc_req_connection, sc_resp_date, string, string, unused, unused, xxx, xxx

The Tomcat AjpConstants.java source code

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.apache.jk.common;


/**
 * Common class for the AJP Protocol values
 */

public class AjpConstants {
    // Prefix codes for message types from server to container
    /**
     * Message code for initial Request packet
     */
    public static final byte JK_AJP13_FORWARD_REQUEST   = 2;
    /**
     * Message code for a request to shutdown Tomcat
     */
    public static final byte JK_AJP13_SHUTDOWN          = 7;
    /**
     * Message code for a Ping request (obsolete)
     */
    public static final byte JK_AJP13_PING_REQUEST      = 8;
    /**
     * Message code for a CPing request
     */
    public static final byte JK_AJP13_CPING_REQUEST     = 10;

    // Prefix codes for message types from container to server
    /**
     * Response code that the package is part of the Response body
     */
    public static final byte JK_AJP13_SEND_BODY_CHUNK   = 3;
    /**
     * Response code that the package is the HTTP headers
     */
    public static final byte JK_AJP13_SEND_HEADERS      = 4;
    /**
     * Response code for EOT
     */
    public static final byte JK_AJP13_END_RESPONSE      = 5;
    /**
     * Response code to request the next Request body chunk
     */
    public static final byte JK_AJP13_GET_BODY_CHUNK    = 6;
    /**
     * Response code to reply to a CPing
     */
    public static final byte JK_AJP13_CPONG_REPLY       = 9;
    
    // Integer codes for common response header strings
    public static final int SC_RESP_CONTENT_TYPE        = 0xA001;
    public static final int SC_RESP_CONTENT_LANGUAGE    = 0xA002;
    public static final int SC_RESP_CONTENT_LENGTH      = 0xA003;
    public static final int SC_RESP_DATE                = 0xA004;
    public static final int SC_RESP_LAST_MODIFIED       = 0xA005;
    public static final int SC_RESP_LOCATION            = 0xA006;
    public static final int SC_RESP_SET_COOKIE          = 0xA007;
    public static final int SC_RESP_SET_COOKIE2         = 0xA008;
    public static final int SC_RESP_SERVLET_ENGINE      = 0xA009;
    public static final int SC_RESP_STATUS              = 0xA00A;
    public static final int SC_RESP_WWW_AUTHENTICATE    = 0xA00B;
        
    // Integer codes for common (optional) request attribute names
    public static final byte SC_A_CONTEXT       = 1;  // XXX Unused
    public static final byte SC_A_SERVLET_PATH  = 2;  // XXX Unused
    public static final byte SC_A_REMOTE_USER   = 3;
    public static final byte SC_A_AUTH_TYPE     = 4;
    public static final byte SC_A_QUERY_STRING  = 5;
    public static final byte SC_A_JVM_ROUTE     = 6;
    public static final byte SC_A_SSL_CERT      = 7;
    public static final byte SC_A_SSL_CIPHER    = 8;
    public static final byte SC_A_SSL_SESSION   = 9;
    public static final byte SC_A_SSL_KEYSIZE   = 11;
    public static final byte SC_A_SECRET        = 12;
    public static final byte SC_A_STORED_METHOD = 13;

    // Used for attributes which are not in the list above
    /**
     * Request Attribute is passed as a String
     */
    public static final byte SC_A_REQ_ATTRIBUTE = 10; 

    /**
     * Terminates list of attributes
     */
    public static final byte SC_A_ARE_DONE      = (byte)0xFF;
    
    /**
     * Translates integer codes to names of HTTP methods
     */
    public static final String []methodTransArray = {
        "OPTIONS",
        "GET",
        "HEAD",
        "POST",
        "PUT",
        "DELETE",
        "TRACE",
        "PROPFIND",
        "PROPPATCH",
        "MKCOL",
        "COPY",
        "MOVE",
        "LOCK",
        "UNLOCK",
        "ACL",
        "REPORT",
        "VERSION-CONTROL",
        "CHECKIN",
        "CHECKOUT",
        "UNCHECKOUT",
        "SEARCH",
        "MKWORKSPACE",
        "UPDATE",
        "LABEL",
        "MERGE",
        "BASELINE-CONTROL",
        "MKACTIVITY"
    };

    /**
     * Request Method is passed as a String
     */
    public static final int SC_M_JK_STORED = (byte) 0xFF;
    
    // id's for common request headers
    public static final int SC_REQ_ACCEPT          = 1;
    public static final int SC_REQ_ACCEPT_CHARSET  = 2;
    public static final int SC_REQ_ACCEPT_ENCODING = 3;
    public static final int SC_REQ_ACCEPT_LANGUAGE = 4;
    public static final int SC_REQ_AUTHORIZATION   = 5;
    public static final int SC_REQ_CONNECTION      = 6;
    public static final int SC_REQ_CONTENT_TYPE    = 7;
    public static final int SC_REQ_CONTENT_LENGTH  = 8;
    public static final int SC_REQ_COOKIE          = 9;
    public static final int SC_REQ_COOKIE2         = 10;
    public static final int SC_REQ_HOST            = 11;
    public static final int SC_REQ_PRAGMA          = 12;
    public static final int SC_REQ_REFERER         = 13;
    public static final int SC_REQ_USER_AGENT      = 14;
    // AJP14 new header
    public static final byte SC_A_SSL_KEY_SIZE  = 11; // XXX ??? 

    /**
     *  Translates integer codes to request header names    
     */
    public static final String []headerTransArray = {
        "accept",
        "accept-charset",
        "accept-encoding",
        "accept-language",
        "authorization",
        "connection",
        "content-type",
        "content-length",
        "cookie",
        "cookie2",
        "host",
        "pragma",
        "referer",
        "user-agent"
    };
    // Ajp13 specific -  needs refactoring for the new model
    /**
     * Maximum Total byte size for a AJP packet
     */
    public static final int MAX_PACKET_SIZE=8192;
    /**
     * Size of basic packet header
     */
    public static final int H_SIZE=4;  
    /**
     * Maximum size of data that can be sent in one packet
     */
    public static final int  MAX_READ_SIZE = MAX_PACKET_SIZE - H_SIZE - 2;

}

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